Firemoon, the Hi-Line’s representative at Saturday night’s Miss Montana Pageant, won the talent competition with her singing of “Phantom of the Opera.” In her first pageant ever, the Fort Peck Reservation 18-year-old also survived the first two cuts of contestants that trimmed the field from 13 to seven.

“I truly enjoyed the experience,” she said.

Sheridan Pope of Sidney was crowned Miss Montana 2013 and will represent the state at the Miss America Pageant in September at Atlantic City, N.J. O...